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A57021 — LIFT SCREW,VALVE

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

A57021: LIFT SCREW,VALVE.

The LIFT SCREW,VALVE is a the manufacturer industrial component. Key specifications include general_characteristics_item_description: BRASS,3-23/32 IN. HIGH,1-1/2 IN.

DIAMETER IN. This part is cataloged in the U.S. Government catalog under NSN 5310-00-373-0357, indicating validated use in U.S.

government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels. Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
A57021
NSN: 5310-00-373-0357
NIINs: 003730357, 012893650
FSC: 5310 — Nuts and Washers
CAGE: 02432 — AMERICAN LAUNDRY MACHINERY INC (USA)
SPECIFICATIONS
general_characteristics_item_descriptionBRASS,3-23/32 IN. HIGH,1-1/2 IN. DIAMETER IN
NSN5310-00-373-0357
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: A57021 · OEM ⚠ VERIFY BEFORE ORDERING Grade matters for torque spec — don't mix grades. A Grade 5 nut on a Grade 8 bolt weakens the joint. Lock nuts, wing nuts, and castle nuts are NOT interchangeable with standard hex ✓ BROKER TIP Match nut to bolt thread class and material. Stainless bolt + zinc nut = galvanic corrosion. Always verify finish matches (plain, zinc, hot-dip galvanized) PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
OVERALL DIAMETER: 1.188 INCHES NOMINAL IN
•
HARDNESS RATING: 85.0 SHORE DUROMETER A NOMINAL
•
CROSS-SECTIONAL SHAPE STYLE: RECTANGULAR
•
PERIPHERAL SHAPE STYLE: ROUND
•
MATERIAL: RUBBER SYNTHETIC OVERALL
•
CENTER HOLE SHAPE STYLE: ROUND
•
HOLE DIAMETER: 0.875 INCHES NOMINAL IN
•
THICKNESS: 0.047 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
OVERALL DIAMETER1.188 INCHES NOMINAL IN
HARDNESS RATING85.0 SHORE DUROMETER A NOMINAL
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
PERIPHERAL SHAPE STYLEROUND
MATERIALRUBBER SYNTHETIC OVERALL
CENTER HOLE SHAPE STYLEROUND
HOLE DIAMETER0.875 INCHES NOMINAL IN
THICKNESS0.047 INCHES NOMINAL IN
SUBSTITUTES & CROSS-REFERENCES 1
BA163Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is A57021?
A57021 is a LIFT SCREW,VALVE.
What parts can replace A57021?
There is 1 known substitute for A57021: BA163. Substitute compatibility should be verified for your specific system.
What is the NSN for A57021?
A57021 is cataloged in the U.S. Government catalog under NSN 5310-00-373-0357. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.